Making a large spirit level

If you want to measure the difference in levels of your garden, you could use a combination of a regular 1m spirit level, you find in the tool section of the hardware store, along with stakes, hammered into the ground. But as the distance between the two points increases or if the height difference is large, this becomes more difficult as more or longer stakes would be required.

An alternative is to make a large spirit level, with a couple of lemonade bottles and a length of garden hose.

Items you will need:
  • 2 large lemonade bottles.
  • Hose pipe
  • Bradawl (bradle) or drill bit
  • Marker pen
  • Water
  • Tape measure
  • Make a hole in the bottom of the lemonade bottles to prevent an air lock.
  • Connect one end of the hose to the neck of one of the bottles.
  • Fill the hose and bottle with water.
  • Fix the second bottle to the other end of the hose.
  • Hold both bottles next to each other and mark the water level.
  • Secure one of the bottles to a stake. When the second bottle is moved around, the water will flow from one bottle to the other. Raising and lowering the second bottle in the air will make the water level move up and down in the bottom. When the water level is on the mark, you made earlier. The two bottles are level, measure the distance from the mark to the ground, subtract the distance of the mark of the first bottle to the ground and you have the difference in height.
A large home made spirit level

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